CN102005937A - Adjustable optimized double-frequency high-pressure pulse-mode crude oil dehydration power supply based on waveform and control method thereof - Google Patents
Adjustable optimized double-frequency high-pressure pulse-mode crude oil dehydration power supply based on waveform and control method thereof Download PDFInfo
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Abstract
The invention discloses an adjustable optimized double-frequency high-pressure pulse-mode crude oil dehydration power supply based on waveform and a control method thereof. The power supply is characterized in that the voltage waveform output by a power supply is double-frequency and double-voltage alternating current, i.e. an output signal determined by two limit voltage values, two frequency values and the waveform of one optimized fundamental wave is boosted by a high-voltage transformer circuit and is output by double-frequency high-voltage alternating current, then, the voltage of secondary winding coil side is rectified similarly to AC/DC double electric fields by a diode rectifier, and the voltage is added on the battery lead plate of a dehydrator to form strong impact force on an emulsion film. The double-frequency high-pressure pulse-mode crude oil dehydration power supply of the invention can self-adaptively determine an optimized power supply output signal aiming at the physical property parameter of raw oil processed currently; two suitable limit voltage values, two frequency values and one optimized base wave waveform are respectively chosen to determine double-frequency/double-voltage power supply output signal; and the emulsion film can be furthest impacted so as to accelerate liquid drop coalescence.
Description
Technical field
The present invention relates to a kind of double frequency high-voltage pulse formula crude oil dehydration electric power and method thereof based on the adjustable optimization of waveform, the device and the method for designing thereof of breaking emulsion and dewatering carried out in specifically a kind of effect that relies on electric field force to water-in-oil type emulsion, this device utilizes double frequency/pair voltage AC power dehydration, can increase the impulsive force to emulsifying film.
Background technology
The breaking method of crude oil oil-water emulsion mainly contains electric demulsification, biological demulsifying, microcapsules breakdown of emulsion, phonochemistry breakdown of emulsion, microwave radiation breakdown of emulsion and ultrasonic dehydration etc.Wherein, the essence of crude oil electric dewatering is the active force of using electric field to water droplet, weakens water droplet interface film strength, promotes the collision of water droplet, makes little water droplet be gathered into the bigger water droplet of particle diameter, and sedimentation separation is come out in crude oil.This dewatering type efficient height, speed are fast, have obtained widespread usage in each oil field.The ordinary crude oils electric dehydration mainly comprises two kinds of DC electric field dehydration, AC field dehydrations.The DC electric field dehydration of crude oil be fit to handle less particle water, but the metal that forms between equipment and charged fluid/electrolyte loop can cause the electrochemical corrosion of equipment.The crude oil that the AC field dehydration is higher to moisture content has dehydrating effect preferably, but is not suitable for handling the lower crude oil emulsion of moisture content.So its efficient is lower, crude charging capacity is lower, and electric field is short-circuited, fluctuation of service, and power consumption is bigger.
Traditional electric dehydrator only uses a voltage indexes control electric field, yet according to the stressed principle of water droplet in the electric dehydration electrostatic field, less drop needs higher voltage that enough making every effort to overcome the clothes interfacial tension and promote water droplet to merge is provided, if but voltage is too high, too big electrostatic field force will surpass the interfacial tension of major diameter water droplet, cause the broken and dispersion of drop, be unfavorable for water-oil separating; Simultaneously the low-voltage electric field can not provide the coalescent of minimum drop in the enough big electrophoretic force promotion oil, but help the maximization of mean drop diameter, therefore voltage is excessive or too smallly all be unfavorable for the dehydration of crude oil, must take all factors into consideration the minimum and maximum value of voltage and select only output voltage.
Summary of the invention
The objective of the invention is at the common dehydration power electrical field of prior art availability low, the fluctuation of service that is short-circuited easily and causes, to the not enough shortcoming of emulsifying film impulsive force, it is that the baseband signal of F1 is formed by a series of frequencies that a kind of electric field that can not only make is provided, but meanwhile this baseband signal changes with reverse frequency F2 again, acceleration is to the impact of emulsifying film, and its control circuit can be controlled the shape of power supply output fundamental waveform and the double frequency/pair voltage-type crude oil dehydration electric power at inclination angle.
The technical solution adopted for the present invention to solve the technical problems is:
A kind of double frequency high-voltage pulse formula crude oil dehydration electric power based on the adjustable optimization of waveform, comprising that current rectifying and wave filtering circuit 1, semibridge system DC chopped-wave voltage-regulating circuit 2, filter circuit 3, inverter circuit 4 and transformer circuit 5 are serially connected successively constitutes the main circuit of dehydration power supply, joins with dehydrator 6; Its special character is, also be connected to control circuit on the described main circuit, the control circuit of main circuit is made up of the two large divisions: the one, and the control section of semibridge system DC chopped-wave voltage-regulating circuit 2, it is by sample circuit 7, current foldback circuit 9, pwm control circuit 10, protective circuit 11 and drive circuit 12 are formed, be connected to drive circuit 12 and protective circuit 11 on the semibridge system DC chopped-wave voltage-regulating circuit 2, drive circuit 12 and protective circuit 11 are also joined, be connected to pwm control circuit 10 on the drive circuit 12 again, be connected to sample circuit 7 and current foldback circuit 9 between filter circuit 3 and the pwm control circuit 10 again; The 2nd, the control section of inverter circuit 4, it is made up of sample circuit 7, anti-biasing circuit 8, pwm control circuit 10, protective circuit 11 and drive circuit 12, be connected to drive circuit 12 and protective circuit 11 on the inverter circuit 4, drive circuit 12 and protective circuit 11 are also joined, be connected to pwm control circuit 10 on the drive circuit 12 again, be connected to sample circuit 7 and anti-biasing circuit 8 between transformer circuit 5 and the pwm control circuit 10 again; By sample out the situation of change of the crude oil water content in the oil dehydrator of the senser sampling circuit 7 that links to each other with dehydrator 6, the value of this variation is transformed into voltage signal, be sent to controller 13, by comparison to former and later two sampled values in the one-period, the size of the pwm control circuit 10 output PWM drive signal duty ratios of the pwm control circuit 10 of the control section of the semibridge system DC chopped-wave voltage-regulating circuit 2 that controller 13 is controlled respectively and the control section of inverter circuit 4, the conducting of control switch device, thereby the maximum VH of change output voltage, minimum value VL, peak pulse duration D, the size of fundamental frequency F1 and reverse frequency F2.
Wherein, the voltage waveform of described last output is bifrequency and two voltage, promptly by two limiting voltage values and two frequency values and the output signal that preferred fundamental waveform determines.The minimum value of electric power output voltage is to make the maximized voltage of drop diameter; The maximum of output voltage is the voltage that makes minimum drop breakdown of emulsion.Frequency is divided fundamental frequency F1 and reverse frequency F2, and these two frequencies depend primarily on speed, the intrinsic frequency of oscillation of Stokes diameter drop of liquid droplet charged and discharge.Fundamental waveform is to handle by controller, can export mathematical any fundamental waveform, and these fundamental waveform comprise logarithm, index, sine, square, zigzag, trapezoidal etc.In addition, controller 13 can also change the inclination angle of these fundamental waveform, thereby changes the speed of curve uplink and downlink.
Wherein, the pwm control circuit 10 of described semibridge system DC chopped-wave voltage-regulating circuit 2 adopts fixed frequency pulse width modulated chip TL494, controller 13 produces control signal, deliver in the voltage sampling amplifier that TL494 carries, the bias reference voltage of the FEEDBACK (pin 3) of control TL494, make its generation pwm signal of comparing with carrier signal, the burst pulse of change width is as drive signal, thus the fundamental waveform and the fundamental frequency F1 of control electric power output voltage.Carrier wave is to be produced by the TL494 internal oscillator, 5 pin, and 6 pin are the vibration input, external capacitance resistance ware can produce the sawtooth signal that carrier frequency is F2=1.1/Rt.Ct.
Wherein, described current foldback circuit 9 utilizes the electric current of the shunt output between series connection semibridge system DC chopped-wave voltage-regulating circuit 2 and the filter circuit 3, through amplifying 15 pin and 16 pin of TL494 in the feedback pwm control circuit 10; under the normal condition, 15 pin level are higher than 16 pin level.The control amplifier output low level of TL494 inside does not influence the pulsewidth of drive output.When the arbitrary terminal shortcircuit overcurrent of power supply primary side; detect ohmically pressure drop and increase to limiting value; this moment, 15 pin level were lower than 16 pin level; control amplifier output high level; block the output of driving pulse; thereby making the width of TL494 assembly output pulse is zero, and whole power supply will quit work immediately, has so just reached the purpose of short circuit overcurrent protection.
Wherein, the control section pwm control circuit 10 of described inverter circuit 4 adopts PWM special integrated chip SG3525 to finish the function of pulse-width signal.SG3525 output two-way conduction phase angle differs 180 ° control signal, through overdrive circuit, and S1 and S4, S2 and the S3 alternate conduction of the high-power IGBT of control inverter circuit.Control the pulsewidth time by the dead band that changes inner PWM comparator of SG3525 and T trigger, make the peak pulse duration of power inverter part adjustable at 10%-90%.
Wherein, described power source voltage and current sample all adopt Hall element, and control circuit and output loop are isolated, and have improved the antijamming capability of control circuit, guarantee the steady operation of control system.Made up hardware proportional integral (PI) controller based on the SG3525 chip, when given electric current I
gWith feedback current I
fDifference DELTA I carry out entering SG3525 integration regulon after ratio regulates through arithmetic element, simultaneously with the result input comparator, produce pwm pulse.When output voltage changes, cause the variation of error voltage, make on the crosspoint of error voltage and triangular wave to rise or move down, thereby change the width of output pulse, the adjusting output voltage.
Wherein, the protective circuit 11 of described main circuit is behind fuse current-limiting resistance to be connected in the major loop; because the input circuit of Switching Power Supply adopts the direct rectifying and wave-filtering of the alternating voltage of 380V is become high direct voltage; the moment that is working on power; can produce very big surge current, be easy to cause the components and parts of importation to be damaged.
Wherein, the control method of described double frequency high-voltage pulse formula crude oil dehydration electric power may further comprise the steps: this power-supply system has proposed power parameter and has optimized the design of intelligent control system method, (is voltage max V with two limiting values of voltage
HWith voltage minimum V
L), fundamental frequency F1, reverse frequency F2 and peak pulse duration D be 5 output parameters of power-supply system, on the basis of technological experiment, the value of roughly selecting that obtains the dehydration power parameter of crude oil emulsion of different nature is stored in database, method by optimizing control on the basis of the experiment value of roughly selecting obtains the best output valve of optimization of the power parameter that is complementary with crude oil emulsion of different nature, be the dewatering process parameter optimum that dehydration of crude oil system obtains when this power parameter output valve work, make that the crude oil water content after the dehydration reaches the optimization minimum.
Double frequency of the present invention/pair voltage-type crude oil dehydration electric power and method for designing thereof are compared with prior art, can select the optimum power output signal, can be according to the basic physical properties parameter of concrete crude oil and the basic principle of crude oil electric dewatering, select two suitable limiting voltage values and two frequency values and a preferred fundamental waveform to determine double frequency/double-voltage electric power output signal respectively, can impact emulsifying film to greatest extent, promote drop ground to assemble.This power-supply system has proposed power parameter and has optimized the design of intelligent control system thinking.
Description of drawings
Fig. 1 is a dehydration power principle block diagram of the present invention;
Fig. 2 is the circuit connection structure figure of main circuit of the present invention;
Fig. 3 a is output voltage, the current waveform analogous diagram of the sinusoidal wave control signal gained of 30Hz for impressed frequency of the present invention.
Fig. 3 b is output voltage, the current waveform analogous diagram of the sinusoidal wave control signal gained of 60Hz for impressed frequency of the present invention.
Fig. 3 c is output voltage, the current waveform analogous diagram of the sinusoidal wave control signal gained of 90Hz for impressed frequency of the present invention.
Fig. 4 a is output voltage, the current waveform analogous diagram of 30Hz square wave control signal gained for impressed frequency of the present invention
Fig. 4 b is output voltage, the current waveform analogous diagram of 60Hz square wave control signal gained for impressed frequency of the present invention
Fig. 4 c is output voltage, the current waveform analogous diagram of 90Hz square wave control signal gained for impressed frequency of the present invention
Fig. 5 a is output voltage, the current waveform analogous diagram of 30Hz sawtooth waveforms control signal gained for impressed frequency of the present invention
Fig. 5 b is output voltage, the current waveform analogous diagram of 60Hz sawtooth waveforms control signal gained for impressed frequency of the present invention
Fig. 5 c is output voltage, the current waveform analogous diagram of 90Hz sawtooth waveforms control signal gained for impressed frequency of the present invention
Fig. 6 adds the output measured waveform figure of sinewave modulation signal gained for the present invention.
Fig. 7 adds the output measured waveform figure of square wave modulation signal gained for the present invention.
Embodiment
Explain below doing below in conjunction with Fig. 1 to 7 couple of the present invention:
As shown in Figure 1, double frequency of the present invention/pair voltage variant crude oil dehydration electric power, its structure comprises the main circuit that rectification circuit 1, semibridge system DC chopped-wave voltage-regulating circuit 2, filter circuit 3, inverter circuit 4 and transformer circuit 5 constitute, it is characterized in that rectification circuit 1, semibridge system DC chopped-wave voltage-regulating circuit 2, filter circuit 3, inverter circuit 4 and transformer circuit 5 are serially connected successively.Civil power 220V alternating current carries out rectification by the half-bridge controlled rectification circuit, it is adjustable continuously at 10V-110V to obtain voltage, frequency F1 is adjustable continuously at 0.1Hz-100Hz, for these fundamental waveform of F1 comprise logarithm, index, sine, square, zigzag, trapezoidal etc., the filtering of wave circuit after filtration then, filtering high frequency clutter ripple keeps stable with voltage.Fundamental voltage behind the rectifying and wave-filtering becomes fundamental voltage into the adjustable double frequency ripple of amplitude, frequency and pulsewidth by inverter circuit and exchanges, through transformer circuit with the double frequency AC boosting after, become the double frequency high-voltage pulse and exchange output, and then the voltage of secondary winding coil sides is similar to the rectification of the two electric fields of AC/DC by diode rectifier, be added to again on the battery lead plate of dehydrator, emulsifying film is formed strong impulsive force.
As shown in Figure 1, main circuit also is connected to control circuit, the control circuit of main circuit is made up of the two large divisions: the one, and the control section of semibridge system DC chopped-wave voltage-regulating circuit 2, it is by sample circuit 7, current foldback circuit 9, pwm control circuit 10, protective circuit 11 and drive circuit 12 are formed, be connected to drive circuit 12 and protective circuit 11 on the semibridge system DC chopped-wave voltage-regulating circuit 2, drive circuit 12 and protective circuit 11 are also joined, be connected to pwm control circuit 10 on the drive circuit 12 again, be connected to sample circuit 7 and current foldback circuit 9 between filter circuit 3 and the pwm control circuit 10 again; The 2nd, the control section of inverter circuit 4; it is made up of sample circuit 7, anti-biasing circuit 8, pwm control circuit 10, protective circuit 11 and drive circuit 12; be connected to drive circuit 12 and protective circuit 11 on the inverter circuit 4; drive circuit 12 and protective circuit 11 are also joined; be connected to pwm control circuit 10 on the drive circuit 12 again, be connected to sample circuit 7 and anti-biasing circuit 8 between transformer circuit 5 and the pwm control circuit 10 again.The control section pwm control circuit 10 of inverter circuit 4 adopts PWM special integrated chip SG3525 to finish the function of pulse-width signal.SG3525 output two-way conduction phase angle differs 180 ° control signal, through overdrive circuit, and S1 and S4, S2 and the S3 alternate conduction of the high-power IGBT of control inverter circuit.Control the pulsewidth time by the dead band that changes inner PWM comparator of SG3525 and T trigger, make the peak pulse duration of power inverter part adjustable.Made up hardware proportional integral (PI) controller based on the SG3525 chip, when given electric current I
gWith feedback current I
fDifference DELTA I carry out entering SG3525 integration regulon after ratio regulates through arithmetic element, simultaneously with the result input comparator, produce pwm pulse.When output voltage changes, cause the variation of error voltage, make and rise on the crosspoint of error voltage and triangular wave or move down, PWM output waveform to output is controlled, control opening and turn-offing of MOSFET device in the inverter circuit 4 through the output waveform of adjusted SG3525 by drive circuit 12, thereby realized control output waveform.Current foldback circuit 9 utilizes the electric current of the shunt output that is connected between semibridge system DC chopped-wave voltage-regulating circuit 2 and the filter circuit 3, through amplifying, feeds back 15 pin and 16 pin of TL494 in the pwm control circuit 10, and positive reason wishes that 15 pin level are higher than 16 pin level down.The control amplifier output low level of TL494 inside does not influence the pulsewidth of drive output.When the arbitrary terminal shortcircuit overcurrent of power supply primary side; detect ohmically pressure drop and increase to limiting value; this moment, 15 pin level were lower than 16 pin level; control amplifier output high level; block the output of driving pulse; thereby making the width of TL494 assembly output pulse is zero, and whole power supply will quit work immediately, has so just reached the purpose of short circuit overcurrent protection.Fundamental waveform is to handle by controller, can export mathematical any fundamental waveform, and these fundamental waveform comprise logarithm, index, sine, square, zigzag, trapezoidal etc.In addition, controller 13 can also change the inclination angle of these fundamental waveform, thereby changes the speed of curve uplink and downlink.The pwm control circuit 10 of semibridge system DC chopped-wave voltage-regulating circuit 2 adopts fixed frequency pulse width modulated chip TL494, controller 13 produces control signal, deliver in the voltage sampling amplifier that TL494 carries, the bias reference voltage of the FEEDBACK (pin 3) of control TL494, make its generation pwm signal of comparing with carrier signal, the burst pulse of change width is as drive signal, thus the fundamental waveform and the fundamental frequency F1 of control electric power output voltage.Carrier wave is to be produced by the TL494 internal oscillator, 5 pin, and 6 pin are the vibration input, external capacitance resistance ware can produce the sawtooth signal that carrier frequency is F2=1.1/Rt.Ct.
As shown in Figure 1, by sample out the situation of change of the crude oil water content in the oil dehydrator of senser sampling circuit 14, the value of this variation is transformed into voltage signal, be sent to controller 13, by comparison to former and later two sampled values in the one-period, the size of the pwm control circuit 10 output PWM drive signal duty ratios of the pwm control circuit 10 of the control section of the semibridge system DC chopped-wave voltage-regulating circuit 2 that controller 13 is controlled respectively and the control section of inverter circuit 4, the conducting of control switch device, thereby the maximum V of change output voltage
H, minimum value V
L, peak pulse duration D, fundamental frequency F1 and reverse frequency F2 size.The finding method of power supply output parameter optimal value, it is the control method of power parameter optimization system, can be under the situation that guarantees dehydration of crude oil system's operate as normal and environmental change, the comparison of the online feedback value by moisture content, use the control computational methods of variable step, the power supply output optimal value that makes two limiting voltage values, two frequency values and pulsewidth ratio progressively approach to make the crude oil water content minimum reaches the purpose that reduces crude oil water content greatly.
As shown in Figure 2; the protective circuit 11 of main circuit is behind fuse current-limiting resistance to be connected in the major loop; because the input circuit of Switching Power Supply adopts the high direct voltage that the direct rectifying and wave-filtering of the alternating voltage of 220V is become 310V; the moment that is working on power; can produce very big surge current, be easy to cause the components and parts of importation to be damaged.
As shown in Figure 3, the output of transformer primary side is voltage, the current waveform analogous diagram of first-harmonic with the sine wave.The frequency of sinusoidal wave control signal all is to be respectively 30Hz, 60Hz, 90Hz, and reverse frequency is 1kHz.
As shown in Figure 4, the output of transformer primary side is voltage, the current waveform analogous diagram of first-harmonic with the square wave.The frequency of square wave control signal all is to be respectively 30Hz, 60Hz, 90Hz, and reverse frequency is 1kHz.
As shown in Figure 5, the output of transformer primary side is voltage, the current waveform analogous diagram of first-harmonic with the triangular wave.The frequency of triangular wave control signal all is to be respectively 30Hz, 60Hz, 90Hz, and reverse frequency is 1kHz.
Claims (8)
1. double frequency high-voltage pulse formula crude oil dehydration electric power based on the adjustable optimization of waveform, comprising that current rectifying and wave filtering circuit (1), semibridge system DC chopped-wave voltage-regulating circuit (2), filter circuit (3), inverter circuit (4) and transformer circuit (5) are serially connected successively constitutes the main circuit of dehydration power supply, joins with dehydrator (6); It is characterized in that: also be connected to the control circuit of forming by the two large divisions on the described main circuit, the one, the control section of semibridge system DC chopped-wave voltage-regulating circuit (2), it is by sample circuit (7), current foldback circuit (9), pwm control circuit (10), protective circuit (11) and drive circuit (12) are formed, be connected to drive circuit (12) and protective circuit (11) on the semibridge system DC chopped-wave voltage-regulating circuit (2), drive circuit (12) and protective circuit (11) are also joined, be connected to pwm control circuit (10) on the drive circuit (12) again, be connected to sample circuit (7) and current foldback circuit (9) between filter circuit (3) and the pwm control circuit (10) again; The 2nd, the control section of inverter circuit (4), it is made up of sample circuit (7), anti-biasing circuit (8), pwm control circuit (10), protective circuit (11) and drive circuit (12), be connected to drive circuit (12) and protective circuit (11) on the inverter circuit (4), drive circuit (12) and protective circuit (11) are also joined, be connected to pwm control circuit (10) on the drive circuit (12) again, be connected to sample circuit (7) and anti-biasing circuit (8) between transformer circuit (5) and the pwm control circuit (10) again; By sample out the situation of change of the crude oil water content in the oil dehydrator of the senser sampling circuit (7) that links to each other with dehydrator (6), the value of this variation is transformed into voltage signal, be sent to controller (13), by comparison to former and later two sampled values in the one-period, the size of pwm control circuit (10) the output PWM drive signal duty ratio of the pwm control circuit (10) of the control section of the semibridge system DC chopped-wave voltage-regulating circuit (2) that controller (13) is controlled respectively and the control section of inverter circuit (4), the conducting of control switch device, thereby the maximum VH of change output voltage, minimum value VL, peak pulse duration D, the size of fundamental frequency F1 and reverse frequency F2.
2. double frequency high-voltage pulse formula crude oil dehydration electric power according to claim 1, it is characterized in that: the voltage waveform of described last output is bifrequency and two voltage, promptly by two limiting voltage values and two frequency values and the output signal that preferred fundamental waveform determines; The minimum value of electric power output voltage is to make the maximized voltage of drop diameter; The maximum of output voltage is the voltage that makes minimum drop breakdown of emulsion; Frequency is divided fundamental frequency F1 and reverse frequency F2, and these two frequencies depend primarily on speed, the intrinsic frequency of oscillation of Stokes diameter drop of liquid droplet charged and discharge; Fundamental waveform is to handle by controller, can export mathematical any fundamental waveform, and these fundamental waveform comprise logarithm, index, sine, square, zigzag, trapezoidal etc.; In addition, controller (13) can also change the inclination angle of these fundamental waveform, thereby changes the speed of curve uplink and downlink.
3. double frequency high-voltage pulse formula crude oil dehydration electric power according to claim 1, it is characterized in that: the pwm control circuit (10) of described semibridge system DC chopped-wave voltage-regulating circuit (2) adopts fixed frequency pulse width modulated chip TL494, controller (13) produces control signal, deliver in the voltage sampling amplifier that TL494 carries, the bias reference voltage of the FEEDBACK (pin 3) of control TL494, make its generation pwm signal of comparing with carrier signal, the burst pulse of change width is as drive signal, thus the fundamental waveform and the fundamental frequency F1 of control electric power output voltage; Carrier wave is to be produced by the TL494 internal oscillator, 5 pin, and 6 pin are the vibration input, external capacitance resistance ware can produce the sawtooth signal that carrier frequency is F2=1.1/Rt.Ct.
4. double frequency high-voltage pulse formula crude oil dehydration electric power according to claim 1, it is characterized in that: described current foldback circuit (9) utilizes the electric current of the shunt output between series connection semibridge system DC chopped-wave voltage-regulating circuit (2) and the filter circuit (3), through amplifying, 15 pin and 16 pin of TL494 in the feedback pwm control circuit (10), under the normal condition, 15 pin level are higher than 16 pin level; The control amplifier output low level of TL494 inside does not influence the pulsewidth of drive output; When the arbitrary terminal shortcircuit overcurrent of power supply primary side; detect ohmically pressure drop and increase to limiting value; this moment, 15 pin level were lower than 16 pin level; control amplifier output high level; block the output of driving pulse; thereby making the width of TL494 assembly output pulse is zero, and whole power supply will quit work immediately, has so just reached the purpose of short circuit overcurrent protection.
5. double frequency high-voltage pulse formula crude oil dehydration electric power according to claim 1 is characterized in that: the control section pwm control circuit (10) of described inverter circuit (4) adopts PWM special integrated chip SG3525 to finish the function of pulse-width signal; SG3525 output two-way conduction phase angle differs 180 ° control signal, through overdrive circuit, and the S1 and the S4 of the high-power IGBT of control inverter circuit, S2 and S3 alternate conduction; Control the pulsewidth time by the dead band that changes inner PWM comparator of SG3525 and T trigger, make the peak pulse duration of power inverter part adjustable at 10%-90%.
6. double frequency high-voltage pulse formula crude oil dehydration electric power according to claim 1, it is characterized in that: described power source voltage and current sample all adopt Hall element, control circuit and output loop are isolated, improved the antijamming capability of control circuit, guarantee the steady operation of control system; Made up hardware proportional integral (PI) controller based on the SG3525 chip, when given electric current I
gWith feedback current I
fDifference DELTA I carry out entering SG3525 integration regulon after ratio regulates through arithmetic element, simultaneously with the result input comparator, produce pwm pulse; When output voltage changes, cause the variation of error voltage, make on the crosspoint of error voltage and triangular wave to rise or move down, thereby change the width of output pulse, the adjusting output voltage.
7. double frequency high-voltage pulse formula crude oil dehydration electric power according to claim 1; it is characterized in that: the protective circuit of described main circuit (11) is behind fuse current-limiting resistance to be connected in the major loop; because the input circuit of Switching Power Supply adopts the direct rectifying and wave-filtering of the alternating voltage of 380V is become high direct voltage; the moment that is working on power; can produce very big surge current, be easy to cause the components and parts of importation to be damaged.
8. method of implementing the described double frequency high-voltage pulse of claim 1 formula crude oil dehydration electric power, it is characterized in that may further comprise the steps: with two limiting values of voltage (is voltage max V
HWith voltage minimum V
L), fundamental frequency F1, reverse frequency F2 and peak pulse duration D be 5 output parameters of power-supply system, on the basis of technological experiment, the value of roughly selecting that obtains the dehydration power parameter of crude oil emulsion of different nature is stored in database, method by optimizing control on the basis of the experiment value of roughly selecting obtains the best output valve of optimization of the power parameter that is complementary with crude oil emulsion of different nature, be the dewatering process parameter optimum that dehydration of crude oil system obtains when this power parameter output valve work, make that the crude oil water content after the dehydration reaches the optimization minimum.
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| CN103178743B (en) * | 2013-04-10 | 2015-06-10 | 浙江大学 | Double-boosting high-voltage pulse power supply |
| CN103178743A (en) * | 2013-04-10 | 2013-06-26 | 浙江大学 | Double-boosting high-voltage pulse power supply |
| CN103441685A (en) * | 2013-09-12 | 2013-12-11 | 江西先材纳米纤维科技有限公司 | Method and device for achieving direct-current high-voltage power source with settable output voltage waveform and fluctuation region |
| CN104531205A (en) * | 2015-01-12 | 2015-04-22 | 北京昊峰节能环保科技有限公司 | Microwave-enhanced static crude oil dehydration device |
| CN110138234A (en) * | 2019-06-24 | 2019-08-16 | 广东天圣高科股份有限公司 | Variable-frequency power sources |
| WO2021092009A1 (en) * | 2019-11-05 | 2021-05-14 | Schlumberger Technology Corporation | Power supply unit, system and method for coalescence of multi-phase liquid mixtures |
| US11398781B2 (en) | 2019-11-05 | 2022-07-26 | Cameron International Corporation | Power supply unit, system and method for coalescence of multi-phase liquid mixtures |
| CN111193425A (en) * | 2020-01-10 | 2020-05-22 | 大连理工大学 | Load self-adaptive high-voltage broadband alternating-current power supply circuit |
| CN111193425B (en) * | 2020-01-10 | 2022-02-15 | 大连理工大学 | Load self-adaptive high-voltage broadband alternating-current power supply circuit |
| CN111647420A (en) * | 2020-06-10 | 2020-09-11 | 哈尔滨理工大学 | Electromagnetic synergistic oil-water separation device and method |
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| CN115404098A (en) * | 2022-09-14 | 2022-11-29 | 天津市正方科技发展有限公司 | Ultrahigh frequency self-adaptive electric dehydration device and processing method |
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Application publication date: 20110406 |